Minecraft can't generate a world with a 0 seed (because NULL in Java is equal to 0), but AMIDST v3.6 (a world generation tool which use the Minecraft algorithms) can do it.
It is a bug?
Environment
Windows 8.1
Java 7 Update 67
Amd fx 6300
8GB Memory
MC-73538
When the seed equal 0 minecraft will generate random world
Resolved
Duplicate
0
Duplicate of MC-44944.